San Jorge

Porphyry copper (Cu-Au) deposit in Mendoza, Argentina

Names and other identifiers

Tract name Argentina Permian San Jorge (005pCu1016ab)
Site status deposit

Geographic location

Country Argentina
State or province Mendoza
Geographic location -69.433333333, -32.25
Geologic map unit -69.433333333, -32.25
Nearby data

Geologic information

Deposit type Porphyry copper
Deposit subtype Cu-Au
Age (Ma) 260Ma
Age determination method K-Ar, mid-point
Age range 263 ±6 to 257 ±5 Ma
Age reference Williams and others (1999)
Minerals Ag-tellurides, apatite, arsenopyrite, azurite/malachite, biotite, bismuth, bismuthinite, bornite, brochantite, calcite, chalcocite, chalcopyrite, chlorite, chrysocolla, copper, covellite, cubanite, cuprite, delafossite, epidote, galena, gold, gypsum, kaolinite, limonite, mackinawite, malachite, marcasite, molybdenite, neotocite, pyrite, pyrrhotite, rutile, sericite, sphalerite, telurobismuthite, tenorite, tourmaline
Associated rocks andesite porphyry, breccia, granodiorite porphyry, ignimbrite, andesite, conglomerate, granite porphyry, greywacke, mudstone, sandstone, shale, siltstone
Tectonic setting continental margin
Stratigraphic age Middle Permian–Late Permian

Commodity and development information

Development status Prospect
Major commodities Cu, Au
Tonnage (Mt) 268Mt
Cu grade (%) 0.45%
Au grade (g/t) 0.45g/t
Contained copper 1,200,000t
Gold-Moly ratio -9999

Reference information

Comments Updated tonnage and grade data from Coro Mining Corp. (2010). 60% of the deposit area is covered by alluvium and colluvium. 0.25% Cu cut-off.
Study area name Andes
References Coro Mining Corp. (2010); Lumina Copper Corp. (2004b); Northern Orion Explorations Ltd. (2000); Sillitoe (1977); Williams and Madrid (1999); Williams and others (1999); Singer and others (2008)
Site reference Cunningham and others (2008)
Coro Mining Corp., 2010, San Jorge: Coro Mining Corp. Web page accessed 2010, at
Lumina Copper Corp., 2004b, San Jorge property: Lumina Copper Corp. press release, March 2, 2004, accessed 2008, at [Web page no longer available.]
Northern Orion Explorations Ltd., 2000, Annual report: Northern Orion Explorations Ltd. Annual Report, accessed 2008, at [Web page no longer available.]
Sillitoe, R.H., 1977, Permo-Carboniferous, upper Cretaceous, and Miocene porphyry copper-type mineralization in the Argentinean Andes: Economic Geology, v. 72, p. 99–109. (Also available at, D.A., Berger, V.I., and Moring, B.C., 2008, Porphyry copper deposits of the world—Database and grade and tonnage models, 2008: U.S. Geological Survey Open-File Report 2008-1155, [45] p. and digital data, accessed December 31, 2013, at
Williams, W.C., and Madrid, J., 1999, El porfiro cuprifero San Jorge, Mendoza, in Zappettini, E.O., ed., Recursos minerales de la Republica Argentina: Buenos Aires, Instituto de Geología y Recursos Minerales (SEGEMAR), Anales 35, p. 797–808.
Williams, W.C., Meissl, E., Madrid, J., and de Machuca, B.C., 1999, The San Jorge porphyry copper deposit, Mendoza, Argentina—A combination of orthomagmatic and hydrothermal mineralization: Ore Geology Reviews, v. 14, p. 185–201. (Also available at